oj.uz

답안 #895138

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
895138 2023-12-29T13:26:24 Z thunopro Event Hopping 2 (JOI21_event2) C++14
100 / 100
 121 ms 26636 KB 
#include<bits/stdc++.h>
using namespace std ; 
#define maxn 300009 
#define ll long long 
#define fi first 
#define se second 
#define pb push_back 
#define left id<<1 
#define right id<<1|1
#define re exit(0);
#define _lower(v,x) lower_bound(v.begin(),v.end(),x)-v.begin()+1

const int mod = 1e9+7 ; 
const int INF = 1e9 ;
const int LOG = 18 ; 

typedef vector<int> vi ; 
typedef pair<int,int> pii ; 
typedef vector<pii> vii ;
typedef vector<ll> vl ;  
typedef pair<ll,ll> pll ; 
typedef vector<pll> vll ; 

void add ( int&a , int b ) { if ((a+=b) > mod ) a -= mod ; } 
void sub ( int&a , int b ) { if ((a-=b) < 0 ) a += mod ; } 
template<typename T> void chkmin(T& x, T y) {if(x > y) x = y;}
template<typename T> void chkmax(T& x, T y) {if(x < y) x = y;}

void rf ( ) 
{
	freopen ("bai1.inp","r",stdin) ; 
//	freopen ("bai1.out","w",stdout) ;
}

int _pow ( int a , int n ) 
{
	if ( n == 0 ) return 1 ; 
	int res = _pow ( a , n / 2 ) ; 
	if ( n % 2 ) return ( 1ll * res * res % mod * a % mod ) ; 
	else return ( 1ll * res * res % mod ) ; 
}

// fill order 
// check find order by build 
// build count (l,r) = spar
// find left and right by set
 
int n , k ; 
struct line {
	int l , r ; 
} a [maxn] ;

void mapping () 
{
	vi v ; 
	for ( int i = 1 ; i <= n ; i ++ ) v . pb (a[i].l) , v . pb (a[i].r) ;
	sort (v.begin(),v.end()) ; 
	v.resize (unique(v.begin(),v.end())-v.begin()) ; 
	for ( int i = 1 ; i <= n ; i ++ ) a [i].l = _lower(v,a[i].l) , a [i].r = _lower(v,a[i].r) ; 
}

const int N = 2e5 ;
const int maxN = N + 9 ; 

int Min [maxN] ; 
int par [maxN][20] ; 
void build_count () 
{
	memset ( Min , 0x3f , sizeof Min ) ;
	memset ( par , 0x3f , sizeof par ) ;  
	for ( int i = 1 ; i <= N ; i ++ ) chkmin (Min[a[i].l],a[i].r) ; 
	for ( int i = N ; i >= 1 ; i -- ) 
	{
		par [i][0] = Min[i] ; 
		chkmin (par[i][0],par[i+1][0]) ; 
	}
	for ( int j = 1 ; j <= __lg (N) ; j ++ ) 
	{
		for ( int i = 1 ; i <= N-(1<<j)+1 ; i ++ ) 
		{
			if ( par[i][j-1] <= N ) par [i][j] = par[par[i][j-1]][j-1] ; 
		}
	}
}
int count_range ( int l , int r ) 
{
	int res = 0 ; 
	for ( int i = LOG ; i >= 0 ; i -- ) 
	{
		if ( par[l][i] <= r ) 
		{
			res += (1<<i) ; 
			l = par[l][i] ; 
		}
	}
	return res ; 
}
int main ( ) 
{
	ios_base :: sync_with_stdio (0) ; 
	cin.tie(0) ; cout.tie(0) ;
//	rf () ;
	cin >> n >> k ; 
	for ( int i = 1 ; i <= n ; i ++ ) cin >> a [i].l >> a [i].r ; 
	
	mapping () ; 
	
	build_count () ; 
	
	set <pii> S ; 
	S.insert ({0,1}) ; 
	S.insert ({N,N+1}) ; 
	vi res ; 
	
	int can = count_range (1,N) ; 
	for ( int i = 1 ; i <= n ; i ++ ) 
	{
		int l = a[i].l , r = a[i].r ; 
		auto it = S.lower_bound({r,0}) ;
		int rig = it->first ; 
		int lef = (--it)->second ; 
		if ( lef > l ) continue ; 
		
		if ( count_range (lef,l) + count_range (r,rig) + 1 - count_range (lef,rig) + can >= k ) 
		{
			can += count_range (lef,l) + count_range (r,rig) - count_range (lef,rig) + 1 ; 
			S.insert ({l,r}) ; 
			res . pb (i) ; 
			if ( res.size () == k ) break ;  
		} 
	}
	if ( res.size () == k ) 
	{
		for ( auto x : res ) cout << x << "\n" ; 
		re 
	}
	cout << - 1 ; 
}




//-std=c++11

Compilation message

event2.cpp: In function 'int main()':
event2.cpp:129:21: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  129 |    if ( res.size () == k ) break ;
      |         ~~~~~~~~~~~~^~~~
event2.cpp:132:19: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  132 |  if ( res.size () == k )
      |       ~~~~~~~~~~~~^~~~
event2.cpp: In function 'void rf()':
event2.cpp:31:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |  freopen ("bai1.inp","r",stdin) ;
      |  ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 16988 KB Output is correct
2 Correct 12 ms 17052 KB Output is correct
3 Correct 12 ms 17052 KB Output is correct
4 Correct 98 ms 25608 KB Output is correct
5 Correct 106 ms 25356 KB Output is correct
6 Correct 91 ms 25004 KB Output is correct
7 Correct 86 ms 24332 KB Output is correct
8 Correct 96 ms 25632 KB Output is correct
9 Correct 103 ms 25276 KB Output is correct
10 Correct 91 ms 25004 KB Output is correct
11 Correct 88 ms 24564 KB Output is correct
12 Correct 80 ms 23472 KB Output is correct
13 Correct 79 ms 23292 KB Output is correct
14 Correct 76 ms 23100 KB Output is correct
15 Correct 75 ms 22948 KB Output is correct
16 Correct 65 ms 21088 KB Output is correct
17 Correct 54 ms 20924 KB Output is correct
18 Correct 55 ms 20832 KB Output is correct
19 Correct 47 ms 20504 KB Output is correct
20 Correct 50 ms 20324 KB Output is correct
21 Correct 49 ms 20300 KB Output is correct
22 Correct 48 ms 20404 KB Output is correct
23 Correct 48 ms 20388 KB Output is correct
24 Correct 55 ms 20672 KB Output is correct
25 Correct 61 ms 20416 KB Output is correct
26 Correct 51 ms 20312 KB Output is correct
27 Correct 51 ms 20396 KB Output is correct
28 Correct 55 ms 20416 KB Output is correct
29 Correct 58 ms 20412 KB Output is correct
30 Correct 56 ms 20392 KB Output is correct
31 Correct 57 ms 20312 KB Output is correct
32 Correct 56 ms 20424 KB Output is correct
33 Correct 57 ms 20284 KB Output is correct
34 Correct 64 ms 22192 KB Output is correct
35 Correct 73 ms 21512 KB Output is correct
36 Correct 50 ms 20928 KB Output is correct
37 Correct 79 ms 23212 KB Output is correct
38 Correct 80 ms 22960 KB Output is correct
39 Correct 93 ms 22848 KB Output is correct
40 Correct 82 ms 22708 KB Output is correct
41 Correct 72 ms 22556 KB Output is correct
42 Correct 72 ms 20412 KB Output is correct
43 Correct 105 ms 22852 KB Output is correct
44 Correct 93 ms 22824 KB Output is correct
45 Correct 84 ms 22704 KB Output is correct
46 Correct 89 ms 22608 KB Output is correct

Subtask #2
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 17052 KB Output is correct
2 Correct 10 ms 16984 KB Output is correct
3 Correct 13 ms 16988 KB Output is correct
4 Correct 11 ms 17048 KB Output is correct
5 Correct 18 ms 16984 KB Output is correct
6 Correct 18 ms 17240 KB Output is correct
7 Correct 15 ms 16988 KB Output is correct
8 Correct 13 ms 16988 KB Output is correct
9 Correct 17 ms 17052 KB Output is correct
10 Correct 15 ms 16988 KB Output is correct
11 Correct 14 ms 16984 KB Output is correct
12 Correct 14 ms 16988 KB Output is correct
13 Correct 14 ms 16988 KB Output is correct
14 Correct 18 ms 16984 KB Output is correct
15 Correct 13 ms 16988 KB Output is correct
16 Correct 9 ms 16988 KB Output is correct
17 Correct 9 ms 16852 KB Output is correct
18 Correct 9 ms 17052 KB Output is correct
19 Correct 9 ms 17048 KB Output is correct
20 Correct 9 ms 16988 KB Output is correct
21 Correct 9 ms 16988 KB Output is correct
22 Correct 9 ms 16988 KB Output is correct
23 Correct 10 ms 16988 KB Output is correct
24 Correct 9 ms 16988 KB Output is correct
25 Correct 12 ms 17056 KB Output is correct
26 Correct 15 ms 16988 KB Output is correct
27 Correct 15 ms 16988 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 17052 KB Output is correct
2 Correct 10 ms 16984 KB Output is correct
3 Correct 13 ms 16988 KB Output is correct
4 Correct 11 ms 17048 KB Output is correct
5 Correct 18 ms 16984 KB Output is correct
6 Correct 18 ms 17240 KB Output is correct
7 Correct 15 ms 16988 KB Output is correct
8 Correct 13 ms 16988 KB Output is correct
9 Correct 17 ms 17052 KB Output is correct
10 Correct 15 ms 16988 KB Output is correct
11 Correct 14 ms 16984 KB Output is correct
12 Correct 14 ms 16988 KB Output is correct
13 Correct 14 ms 16988 KB Output is correct
14 Correct 18 ms 16984 KB Output is correct
15 Correct 13 ms 16988 KB Output is correct
16 Correct 9 ms 16988 KB Output is correct
17 Correct 9 ms 16852 KB Output is correct
18 Correct 9 ms 17052 KB Output is correct
19 Correct 9 ms 17048 KB Output is correct
20 Correct 9 ms 16988 KB Output is correct
21 Correct 9 ms 16988 KB Output is correct
22 Correct 9 ms 16988 KB Output is correct
23 Correct 10 ms 16988 KB Output is correct
24 Correct 9 ms 16988 KB Output is correct
25 Correct 12 ms 17056 KB Output is correct
26 Correct 15 ms 16988 KB Output is correct
27 Correct 15 ms 16988 KB Output is correct
28 Correct 11 ms 17240 KB Output is correct
29 Correct 10 ms 16988 KB Output is correct
30 Correct 11 ms 16988 KB Output is correct
31 Correct 10 ms 16988 KB Output is correct
32 Correct 10 ms 16972 KB Output is correct
33 Correct 13 ms 16984 KB Output is correct
34 Correct 15 ms 16988 KB Output is correct
35 Correct 14 ms 17168 KB Output is correct
36 Correct 14 ms 17244 KB Output is correct
37 Correct 11 ms 16988 KB Output is correct
38 Correct 11 ms 17172 KB Output is correct
39 Correct 13 ms 17172 KB Output is correct
40 Correct 11 ms 17496 KB Output is correct
41 Correct 12 ms 17144 KB Output is correct
42 Correct 11 ms 16988 KB Output is correct
43 Correct 10 ms 16984 KB Output is correct
44 Correct 11 ms 16988 KB Output is correct
45 Correct 10 ms 16984 KB Output is correct
46 Correct 11 ms 17176 KB Output is correct
47 Correct 11 ms 17172 KB Output is correct
48 Correct 14 ms 16988 KB Output is correct
49 Correct 13 ms 17164 KB Output is correct
50 Correct 18 ms 16988 KB Output is correct
51 Correct 12 ms 17168 KB Output is correct
52 Correct 10 ms 16984 KB Output is correct
53 Correct 10 ms 16988 KB Output is correct
54 Correct 10 ms 16984 KB Output is correct
55 Correct 15 ms 17180 KB Output is correct
56 Correct 14 ms 17244 KB Output is correct
57 Correct 11 ms 17244 KB Output is correct
58 Correct 11 ms 17244 KB Output is correct
59 Correct 12 ms 17176 KB Output is correct
60 Correct 11 ms 17240 KB Output is correct
61 Correct 11 ms 17244 KB Output is correct
62 Correct 12 ms 17244 KB Output is correct
63 Correct 11 ms 17244 KB Output is correct
64 Correct 11 ms 16988 KB Output is correct

Subtask #4
61.0 / 61.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 16988 KB Output is correct
2 Correct 12 ms 17052 KB Output is correct
3 Correct 12 ms 17052 KB Output is correct
4 Correct 98 ms 25608 KB Output is correct
5 Correct 106 ms 25356 KB Output is correct
6 Correct 91 ms 25004 KB Output is correct
7 Correct 86 ms 24332 KB Output is correct
8 Correct 96 ms 25632 KB Output is correct
9 Correct 103 ms 25276 KB Output is correct
10 Correct 91 ms 25004 KB Output is correct
11 Correct 88 ms 24564 KB Output is correct
12 Correct 80 ms 23472 KB Output is correct
13 Correct 79 ms 23292 KB Output is correct
14 Correct 76 ms 23100 KB Output is correct
15 Correct 75 ms 22948 KB Output is correct
16 Correct 65 ms 21088 KB Output is correct
17 Correct 54 ms 20924 KB Output is correct
18 Correct 55 ms 20832 KB Output is correct
19 Correct 47 ms 20504 KB Output is correct
20 Correct 50 ms 20324 KB Output is correct
21 Correct 49 ms 20300 KB Output is correct
22 Correct 48 ms 20404 KB Output is correct
23 Correct 48 ms 20388 KB Output is correct
24 Correct 55 ms 20672 KB Output is correct
25 Correct 61 ms 20416 KB Output is correct
26 Correct 51 ms 20312 KB Output is correct
27 Correct 51 ms 20396 KB Output is correct
28 Correct 55 ms 20416 KB Output is correct
29 Correct 58 ms 20412 KB Output is correct
30 Correct 56 ms 20392 KB Output is correct
31 Correct 57 ms 20312 KB Output is correct
32 Correct 56 ms 20424 KB Output is correct
33 Correct 57 ms 20284 KB Output is correct
34 Correct 64 ms 22192 KB Output is correct
35 Correct 73 ms 21512 KB Output is correct
36 Correct 50 ms 20928 KB Output is correct
37 Correct 79 ms 23212 KB Output is correct
38 Correct 80 ms 22960 KB Output is correct
39 Correct 93 ms 22848 KB Output is correct
40 Correct 82 ms 22708 KB Output is correct
41 Correct 72 ms 22556 KB Output is correct
42 Correct 72 ms 20412 KB Output is correct
43 Correct 105 ms 22852 KB Output is correct
44 Correct 93 ms 22824 KB Output is correct
45 Correct 84 ms 22704 KB Output is correct
46 Correct 89 ms 22608 KB Output is correct
47 Correct 13 ms 17052 KB Output is correct
48 Correct 10 ms 16984 KB Output is correct
49 Correct 13 ms 16988 KB Output is correct
50 Correct 11 ms 17048 KB Output is correct
51 Correct 18 ms 16984 KB Output is correct
52 Correct 18 ms 17240 KB Output is correct
53 Correct 15 ms 16988 KB Output is correct
54 Correct 13 ms 16988 KB Output is correct
55 Correct 17 ms 17052 KB Output is correct
56 Correct 15 ms 16988 KB Output is correct
57 Correct 14 ms 16984 KB Output is correct
58 Correct 14 ms 16988 KB Output is correct
59 Correct 14 ms 16988 KB Output is correct
60 Correct 18 ms 16984 KB Output is correct
61 Correct 13 ms 16988 KB Output is correct
62 Correct 9 ms 16988 KB Output is correct
63 Correct 9 ms 16852 KB Output is correct
64 Correct 9 ms 17052 KB Output is correct
65 Correct 9 ms 17048 KB Output is correct
66 Correct 9 ms 16988 KB Output is correct
67 Correct 9 ms 16988 KB Output is correct
68 Correct 9 ms 16988 KB Output is correct
69 Correct 10 ms 16988 KB Output is correct
70 Correct 9 ms 16988 KB Output is correct
71 Correct 12 ms 17056 KB Output is correct
72 Correct 15 ms 16988 KB Output is correct
73 Correct 15 ms 16988 KB Output is correct
74 Correct 11 ms 17240 KB Output is correct
75 Correct 10 ms 16988 KB Output is correct
76 Correct 11 ms 16988 KB Output is correct
77 Correct 10 ms 16988 KB Output is correct
78 Correct 10 ms 16972 KB Output is correct
79 Correct 13 ms 16984 KB Output is correct
80 Correct 15 ms 16988 KB Output is correct
81 Correct 14 ms 17168 KB Output is correct
82 Correct 14 ms 17244 KB Output is correct
83 Correct 11 ms 16988 KB Output is correct
84 Correct 11 ms 17172 KB Output is correct
85 Correct 13 ms 17172 KB Output is correct
86 Correct 11 ms 17496 KB Output is correct
87 Correct 12 ms 17144 KB Output is correct
88 Correct 11 ms 16988 KB Output is correct
89 Correct 10 ms 16984 KB Output is correct
90 Correct 11 ms 16988 KB Output is correct
91 Correct 10 ms 16984 KB Output is correct
92 Correct 11 ms 17176 KB Output is correct
93 Correct 11 ms 17172 KB Output is correct
94 Correct 14 ms 16988 KB Output is correct
95 Correct 13 ms 17164 KB Output is correct
96 Correct 18 ms 16988 KB Output is correct
97 Correct 12 ms 17168 KB Output is correct
98 Correct 10 ms 16984 KB Output is correct
99 Correct 10 ms 16988 KB Output is correct
100 Correct 10 ms 16984 KB Output is correct
101 Correct 15 ms 17180 KB Output is correct
102 Correct 14 ms 17244 KB Output is correct
103 Correct 11 ms 17244 KB Output is correct
104 Correct 11 ms 17244 KB Output is correct
105 Correct 12 ms 17176 KB Output is correct
106 Correct 11 ms 17240 KB Output is correct
107 Correct 11 ms 17244 KB Output is correct
108 Correct 12 ms 17244 KB Output is correct
109 Correct 11 ms 17244 KB Output is correct
110 Correct 11 ms 16988 KB Output is correct
111 Correct 65 ms 21156 KB Output is correct
112 Correct 69 ms 20992 KB Output is correct
113 Correct 68 ms 20980 KB Output is correct
114 Correct 63 ms 20924 KB Output is correct
115 Correct 65 ms 20932 KB Output is correct
116 Correct 86 ms 21104 KB Output is correct
117 Correct 91 ms 20928 KB Output is correct
118 Correct 121 ms 26256 KB Output is correct
119 Correct 112 ms 25544 KB Output is correct
120 Correct 92 ms 23472 KB Output is correct
121 Correct 92 ms 20924 KB Output is correct
122 Correct 100 ms 24048 KB Output is correct
123 Correct 99 ms 23704 KB Output is correct
124 Correct 90 ms 23548 KB Output is correct
125 Correct 101 ms 20928 KB Output is correct
126 Correct 81 ms 21604 KB Output is correct
127 Correct 74 ms 21460 KB Output is correct
128 Correct 82 ms 21504 KB Output is correct
129 Correct 88 ms 21180 KB Output is correct
130 Correct 69 ms 20924 KB Output is correct
131 Correct 67 ms 20920 KB Output is correct
132 Correct 69 ms 20952 KB Output is correct
133 Correct 102 ms 20952 KB Output is correct
134 Correct 67 ms 20924 KB Output is correct
135 Correct 69 ms 20964 KB Output is correct
136 Correct 65 ms 20908 KB Output is correct
137 Correct 80 ms 20924 KB Output is correct
138 Correct 69 ms 21400 KB Output is correct
139 Correct 65 ms 20924 KB Output is correct
140 Correct 66 ms 20932 KB Output is correct
141 Correct 84 ms 20964 KB Output is correct
142 Correct 96 ms 26612 KB Output is correct
143 Correct 106 ms 26636 KB Output is correct
144 Correct 102 ms 26520 KB Output is correct
145 Correct 83 ms 26496 KB Output is correct
146 Correct 100 ms 26412 KB Output is correct
147 Correct 80 ms 26260 KB Output is correct
148 Correct 85 ms 26284 KB Output is correct
149 Correct 81 ms 26180 KB Output is correct
150 Correct 77 ms 25948 KB Output is correct
151 Correct 74 ms 25260 KB Output is correct
152 Correct 63 ms 20960 KB Output is correct
153 Correct 99 ms 26604 KB Output is correct
154 Correct 81 ms 26520 KB Output is correct
155 Correct 84 ms 26600 KB Output is correct
156 Correct 78 ms 26260 KB Output is correct
157 Correct 82 ms 25980 KB Output is correct
158 Correct 78 ms 26032 KB Output is correct
159 Correct 76 ms 25520 KB Output is correct
160 Correct 53 ms 20928 KB Output is correct
161 Correct 102 ms 23800 KB Output is correct
162 Correct 89 ms 23616 KB Output is correct
163 Correct 87 ms 23428 KB Output is correct
164 Correct 86 ms 23468 KB Output is correct
165 Correct 91 ms 23348 KB Output is correct
166 Correct 57 ms 20928 KB Output is correct
167 Correct 79 ms 23504 KB Output is correct
168 Correct 76 ms 23472 KB Output is correct
169 Correct 73 ms 23472 KB Output is correct
170 Correct 72 ms 23204 KB Output is correct
171 Correct 74 ms 23044 KB Output is correct
172 Correct 78 ms 23972 KB Output is correct
173 Correct 103 ms 23704 KB Output is correct
174 Correct 91 ms 23760 KB Output is correct
175 Correct 91 ms 23732 KB Output is correct
176 Correct 89 ms 23124 KB Output is correct